Lathe clutch mechanism.



* E. FEILHAUER.

LATHE cLuTcH mEcHANlsM.

APPLICATION FILED SEPT. 26. I9I6.

Pmntea Deo, 18,1191?.

'y EDMUNIS FEILHUER, oF cINoINNA'rLoiIIo. I 1

p' i narnia cLUToHVMncHnNIsM.

To all who'in t may Gomera: 1

a citizen of the UnitedStates, residing .at Cincinnati,.in the county of yHamilton and vState Vof Ohio, have'invented certain new and useful Improvements inLathe yClutch Mechanism, vof whichv the' following is a specification. -f f My invention relates to improvements in lathemechanism. One of its objects `-is to provide improved mechanism to clutch vthe face gear` and cone pulley together on the lathe spindle when the back gear mechanism Anotherobject is to provide such a Vmechanism which issimple strong andreliable and readily operable without loss of time.. My invention also comprises r for-thv in rthe description of the` accompany r stock embodying my improvements.

1 Fig. 2 is asectionalA detailV on line fv v of,

Fig. 1 illustrating the cone pulley in end elevation,A 1 .j v

,.Fig. e is, a VSectional daar@ kune t, a of Fig. 1 illustrating the Aface gear in end elevation.

Fig. 4 is a sectional detail onvlline z z of Fig. 3 illustrating the conelpulleyandface gear clutchedftogether.:

Fig. 5 is a similar view with the clutchmember in retracted position.. .1 f n Fig. 6 is a perspective view of the clutch member detached.

Fig. 7 is a perspective View of the eccen-v tric shaft which serves to actuate the clutch member. 1

Fig. 8 is a sectional detail on line lw fw of Fi 2. v

ig. 9 is a sectional detail on line y y of Fig. 3. The accompanying drawings illustrate the preferred embodiment of my invention in which 2 represents a lathe headstock having a lathe spindle 3 journaled thereto at opposite ends in boxes 4 and 5. Mounted rigidly on the spindle 3 isv a face gear 6 which is adapted to be driven from the back gear pinion 7 for slow spindle speeds and which is designed to be clutched to the cone pulley 8 when the spindle 3 is to be driven at higher speeds. The cone pulley 8 and pinion 9 are' connected together and constitute a sleeve which is loosely journaled upon l specification ofiettersratent.

. the spindle Theicone pulley .isdriven by Be 4it knownl that- I, EDMUND.V FEILHAUER, l

beltnot'shown at.. variable.` speedv from. a

counter-shaft and when the face gear is v *clutched vto the cone'vpull'eyl the face gear,

cone pulley and spindle all revolve together at the same speed.

An eccentrically mounted shaft 10 is jour;

A naled in boxes l1 and 12-onthe-heads'tock,

pulley-.and pinion 9 rotate loosely onthe spindle and -transmit motion; at .a slower speed lto the `spindle through the, gears 9 'n andv 15, the sleeve 414 and `gears 7 and.M

l In order to clutch thesface gear 6f to the cone pulley whenldesired .I provide` an ,an,

nular rib17 projecting fro-m the web 18 ofk the cone pulley toward the web 19 ofthe f face gear, and a concentric annularvrib 2O projecting from the webl9 of the yface gear toward the web 18 ofthe cone pulley, the adjacentlfaces of said ribs `17 and 2O being close together. A rectangularnotch orv recess 21 is `cut in the rib 17 ,l 'and av dovetailed Anotch 24 is cutin the-ribaj20., A clutch member 25 with beveled faces .26 to Vfit the v notch 24 and rectangular faces27 toitthe 4notch21 is fittedto slide in a radial direc- -f tion in Ithenotch-24- j As'hort shaft30 is journaledin acylindrical; ljhole ',bored through the web 19 of the face gear and is Y vprovided with afknurled` head 31'having a shoulder 32 seating against the outer face of web 19. A stud 33 eccentric to the shaft 30 projects from the opposite end thereof into a slotted recess 34 in the clutch member 25'to shift said clutch member forward and backward in a radial direction. A washer 35 seated in a recess 36 in the member 25 is held in place relative to the stud 33 by a screw 37 threaded into the end of said stud 33, which serves to hold the clutch member25 and shaft 30 in place relative to the web of the `face gear.

When-the notches 21 and 24 are brought ing the cone pulley tothe face gear. The fit of the shaft 30 in the bore 38 is sufficiently tight to retain the clutch member 25 in any y Patenteanec. 18,1917. Y Application filed September 26, 1916." Serial No'. 122,297. I- i iA lWhen the back gears are employed, thecone v osition to which it may be adjusted by the murl 3l, particularly when the stud 33 is on dead center at -either -extremityof the movement of member 25. Two or more,

notches 21 may be provided in the member 17 if desired.

support and guide a clutch member,-a ra` scribedis capable of considerable modiiication without departing 'from the principle of my invention.

. Having described my linvention what I claim is:

l.y In a lathe, fa lathe spindle provided' with a rigidly mounted face gear, a belt pulley lloosely journaled on said spindle, ad-

I V jacent concentric annular ribs projecting respectively from the webs kof said-'belt pulley and saidface gear, a radial slot in one ofV said ribs to receive a radiallyv movable clutch member, a radial slot in the opposite rib to dially movable clutch member guided by' one of said ribs and vadapted to-engage and disengage the slot of theopposite rib i. tolock said ribs together, and means journaledin the web of said face 'gear and operable from the oppositel side of the face gear-toactuate said movable clutchy member.

2. In a lathe, Aa lathe spindle provided with a rigidly mounted :tace gear, a `beltpulleyloosely journaled on said-l spindle adjacent to said face gear, an annular rib carried by and projecting from the web ofthe belt pulley and located between the "belt pulley and the face gear, said'ribbeing provided with a clutch recess, an annular rib carried by and'projecting from the web of the -iace'gear` andlocated between the belt rpulley and face gear, said rib being provided posite iside. ,of said' face gear to .actuate-v said 'movable clutchQmember.

3. :Inra lathe, va lathe spindle .provided `with a rifgidly mounted face gear, :a Icone pulley loosely journaled on said spindle ladjacent to said face gear, an annular. lrib carried by and projecting from thewebof-said cone pulley: and located between said' cone pulley-and .ac`e1gear, said rib-being provided with a clutch recess, an :annularrib carried by and projecting from the websor' the acewgear-andlocated vbetween the cone .pulleyxand .i face gear, 1 said Irib being y' provided with tagraclial. recessgto guide a clutch imemb'er, Va fradiall-y smovable clutch member mounted in said @guides f carriedV by -the annular v'rib of-t'lie tface gear tof engage and disengage the clutch `recess ofsaid Acone pulley tri-b, an actuating shaft journaled in bearings carried by :said facerlgear .and 0p @era-tively connected tov said vfmovab'le Jclutch member` to enable :said clutch mem'ber to: be

`actuated from fthe opposite side of lthe face gear.

In testimony whereof I haveaiiX-'ed imy Esignati'ire the presenceoftwo* witnesses.

.Copies of: thislpatentmay beobtainedr criv' cents each, by addressing.'rhemoinmissibner ofateta, -Wahingtona G, v 

